Thermoplastic composition containing polycarbonate, polyamide and rubbery graft copolymer

Abstract

A thermoplastic resin composition excellent in solvent resistance, paintability and moldability which comprises a polycarbonate resin and a conjugated diene rubber copolymer comprising units of a conjugated diene rubber, an aromatic vinyl compound and at least one of vinyl cyanide compounds and optionally hydroxylated alkyl esters of unsaturated carboxylic acids in a weight proportion of 20:80 to 80:20 with a polyamide resin in an amount of 0.1 to 20 parts by weight on the basis of 100 parts by weight of the combined weight of the polycarbonate resin and the conjugated diene rubber copolymer.

What is claimed is: 
     
       1. A thermoplastic resin composition which comprises a polycarbonate resin and a conjugated diene rubber copolymer, said conjugated diene rubber being prepared by polymerizing an aromatic vinyl compound and at least one of vinyl cyanide compounds and hydroxylated or nonhydroxylated alkyl esters of unsaturated monocarboxylic acids onto a conjugated diene rubber, in a weight propoprtion of 20:80 to 80:20 with a polyamide resin in an amount of 0.1 to 20 parts by weight on the basis of 100 parts by weight of the combined weight of the polycarbonate resin and the conjugated diene rubber copolymer. 
     
     
       2. The thermoplastic resin composition according to claim 1, wherein the weight proportion of the polycarbonate resin and the conjugated diene rubber copolymer is from 50:50 to 80:20. 
     
     
       3. The thermoplastic resin composition according to claim 1, wherein the amount of the polyamide resin is 1 to 10 parts by weight on the basis of 100 parts by weight of the combined weight of the polycarbonate resin and the conjugated diene rubber copolymer.